24 



PROCEEDINGS OF THE NATIONAL MUSEUM 



VOL. 71 



Aside from the most typical mode of occurrence of epidote in the 

 anorthite-bearing masses, this mineral was found in several other 

 associations. Not infrequently a small mass of columnar yellow- 

 green material or a group of imperfect prisms is observed resting 

 on good vesuvianite crystals in garnet-diopside hornfels. In a few 

 specimens similar epidote is interstitial with relation to large 

 poorly formed grossularite garnets. In several other cases radiated 

 acicular greenish yellow epidote fills small seams and cavities in 

 fine-grained massive diopside rock. In 2 specimens similar epidote 

 rests on twinned diopside crystals and zoned garnets, and is over- 

 lain by calcite. One specimen contains deep yellowish green epidote 

 in ill-defined crystals along the sides of a 1-centimeter calcite vein- 

 let in altered shale. 



Two analyses of epidote from this locality were made by Eakins. 

 There is no record as to which specimens in the collection furnished 

 the material for those analyses. The results obtained are as follows : 



Analyses of epidote 

 [L. Q. Eakins, analyst] 



The most noteworthy feature of the analyses is the presence of 

 fluorine, these being the first analyses to record fluorine in this 

 mineral. The specific gravities recorded for the analyzed samples 

 are 3.448 at 25° C. for the material of analysis 1 and 3.452 at 17° C. 

 for the material of analysis 2. 



ALBITE 



Soda feldspar has been identified as a constituent of a number of 

 specimens. In a mass of loosely aggregated large brown grossularite 

 garnets small scattered imperfectly prismatic white crystals occur 

 in a number of open spaces. This mineral is biaxial with 2V near 



